Hiroyuki Masuno is a Japanese programmer and sound composer and was the main audio designer at Kemco. He is best known for his NES soundtracks for Deja Vu, Shadowgate, and Uninvited. Hiro started his video game music career around 1985 when he worked for Kemco as a sound composer and programmer. His first work there was to convert the music from the Commodore 64 title "Doughboy" to the Nintendo Famicom. While working at Kemco, he wrote the sound drivers and worked on the music and sound to all of their games. Since the company usually made games based on anime and television, he would arrange the original soundtracks to the Famicom. When more composers started working at Kemco, Hiroyuki started to compose less music for them and became more of a sound producer. After 10 years of working for Kemco, Hiroyuki left the company in March 1998 and started working for Compile as an executive producer. After three years working for Compile, he left and became the CEO of ICA Corporation where he programmed and translated video games. In January of 2004, Masuno started working for Zoom Inc. as a programmer and eventually became the vice president, and chief technical officer. In January 2006, he worked for Sonic Blue, working as a game designer, programmer, and sound programmer. After that, he started working for Cyclone Zero doing the same job.

Ever since April 2009, Hiroyuki Masuno has been working for Arc System Works as a game designer, programmer, and sound engineer. Hiro also worked on a game called BlazBlue, and created a program that lets players create their own music. He currently works for E4 on 0D Beat Drop and the NAX Music Player.